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Highly Efficient Self-Starting Femtosecond Cr:Forsterite Laser |
| ZHOU Bin-Bin, ZHANG Yong-Dong, ZHONG Xin, WEI Zhi-Yi |
| Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 |
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| Cite this article: |
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ZHOU Bin-Bin, ZHANG Yong-Dong, ZHONG Xin et al 2008 Chin. Phys. Lett. 25 3679-3681 |
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Abstract We report a highly efficient and high power self-starting femtosecond Cr:forsterite laser pumped by a 1064-nm Yb doped fibre laser. Five chirped mirrors are used to compensate for the intra-cavity group-delay dispersion, and the mode-locking is initiated by a semiconductor saturable absorber mirror (SESAM). Under pump power of 7.9W, stable femtosecond laser pulses with average power of 760mW are obtained, yielding a pump power slope efficiency of 12.3%. The measured pulse duration and spectral bandwidth (FWHM) are 46fs and 45nm; the repetition rate is 82MHz.
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| Keywords:
42.60.Fc
42.60.Lh
42.72.Ai
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Received: 23 June 2008
Published: 26 September 2008
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| PACS: |
42.60.Fc
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(Modulation, tuning, and mode locking)
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42.60.Lh
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(Efficiency, stability, gain, and other operational parameters)
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42.72.Ai
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(Infrared sources)
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